An improved medium for growing Staphylococcus aureus biofilm

Area of Science:

• Microbiology
• Biotechnology

Background:

• Staphylococcus aureus is a significant pathogen.
• Developing reproducible in vitro models for studying Staphylococcus aureus biofilms is crucial for understanding infection dynamics and developing therapeutics.

Purpose of the Study:

• To develop and validate a novel growth medium for reproducible Staphylococcus aureus biofilm formation in vitro.
• To assess the efficacy of the developed medium in both flow chamber and static well plate models.

Main Methods:

• A modified Brain Heart Infusion medium supplemented with 10% human plasma was formulated.
• Staphylococcus aureus biofilms were cultivated in vitro using flow chambers under controlled shear flow conditions.
• Bacterial viability was assessed in static well plates.

Main Results:

• The developed medium supported the formation of reproducible and robust Staphylococcus aureus biofilms in flow chambers.
• Significantly increased viability recovery of Staphylococcus aureus was observed in static well plates using the new medium.
• The medium demonstrated consistent performance for biofilm cultivation.

Conclusions:

• The novel Brain Heart Infusion plus human plasma medium is effective for in vitro cultivation of Staphylococcus aureus biofilms.
• This validated medium provides a reliable tool for standardized biofilm research, improving bacterial viability assessments.